Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 1 | /* |
Kim Phillips | 57a2af3 | 2009-07-18 18:42:13 -0500 | [diff] [blame^] | 2 | * Copyright (C) 2006-2009 Freescale Semiconductor, Inc. |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 3 | * |
| 4 | * See file CREDITS for list of people who contributed to this |
| 5 | * project. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of |
| 10 | * the License, or (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | #include <asm/mmu.h> |
| 14 | #include <asm/io.h> |
| 15 | #include <common.h> |
| 16 | #include <mpc83xx.h> |
| 17 | #include <pci.h> |
| 18 | #include <i2c.h> |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 19 | #include <fdt_support.h> |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 20 | #include <asm/fsl_i2c.h> |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 21 | #include <asm/fsl_serdes.h> |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 22 | |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 23 | static struct pci_region pci_regions[] = { |
| 24 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 25 | bus_start: CONFIG_SYS_PCI_MEM_BASE, |
| 26 | phys_start: CONFIG_SYS_PCI_MEM_PHYS, |
| 27 | size: CONFIG_SYS_PCI_MEM_SIZE, |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 28 | flags: PCI_REGION_MEM | PCI_REGION_PREFETCH |
| 29 | }, |
| 30 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 31 | bus_start: CONFIG_SYS_PCI_MMIO_BASE, |
| 32 | phys_start: CONFIG_SYS_PCI_MMIO_PHYS, |
| 33 | size: CONFIG_SYS_PCI_MMIO_SIZE, |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 34 | flags: PCI_REGION_MEM |
| 35 | }, |
| 36 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 37 | bus_start: CONFIG_SYS_PCI_IO_BASE, |
| 38 | phys_start: CONFIG_SYS_PCI_IO_PHYS, |
| 39 | size: CONFIG_SYS_PCI_IO_SIZE, |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 40 | flags: PCI_REGION_IO |
| 41 | } |
| 42 | }; |
| 43 | |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 44 | static struct pci_region pcie_regions_0[] = { |
| 45 | { |
| 46 | .bus_start = CONFIG_SYS_PCIE1_MEM_BASE, |
| 47 | .phys_start = CONFIG_SYS_PCIE1_MEM_PHYS, |
| 48 | .size = CONFIG_SYS_PCIE1_MEM_SIZE, |
| 49 | .flags = PCI_REGION_MEM, |
| 50 | }, |
| 51 | { |
| 52 | .bus_start = CONFIG_SYS_PCIE1_IO_BASE, |
| 53 | .phys_start = CONFIG_SYS_PCIE1_IO_PHYS, |
| 54 | .size = CONFIG_SYS_PCIE1_IO_SIZE, |
| 55 | .flags = PCI_REGION_IO, |
| 56 | }, |
| 57 | }; |
| 58 | |
| 59 | static struct pci_region pcie_regions_1[] = { |
| 60 | { |
| 61 | .bus_start = CONFIG_SYS_PCIE2_MEM_BASE, |
| 62 | .phys_start = CONFIG_SYS_PCIE2_MEM_PHYS, |
| 63 | .size = CONFIG_SYS_PCIE2_MEM_SIZE, |
| 64 | .flags = PCI_REGION_MEM, |
| 65 | }, |
| 66 | { |
| 67 | .bus_start = CONFIG_SYS_PCIE2_IO_BASE, |
| 68 | .phys_start = CONFIG_SYS_PCIE2_IO_PHYS, |
| 69 | .size = CONFIG_SYS_PCIE2_IO_SIZE, |
| 70 | .flags = PCI_REGION_IO, |
| 71 | }, |
| 72 | }; |
| 73 | |
| 74 | static int is_pex_x2(void) |
| 75 | { |
| 76 | const char *pex_x2 = getenv("pex_x2"); |
| 77 | |
| 78 | if (pex_x2 && !strcmp(pex_x2, "yes")) |
| 79 | return 1; |
| 80 | return 0; |
| 81 | } |
| 82 | |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 83 | void pci_init_board(void) |
| 84 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 85 | volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 86 | volatile sysconf83xx_t *sysconf = &immr->sysconf; |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 87 | volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk; |
| 88 | volatile law83xx_t *pci_law = immr->sysconf.pcilaw; |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 89 | volatile law83xx_t *pcie_law = sysconf->pcielaw; |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 90 | struct pci_region *reg[] = { pci_regions }; |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 91 | struct pci_region *pcie_reg[] = { pcie_regions_0, pcie_regions_1, }; |
| 92 | u32 spridr = in_be32(&immr->sysconf.spridr); |
| 93 | int pex2 = is_pex_x2(); |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 94 | |
Anton Vorontsov | 30c6992 | 2008-10-02 19:17:33 +0400 | [diff] [blame] | 95 | if (board_pci_host_broken()) |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 96 | goto skip_pci; |
Anton Vorontsov | 30c6992 | 2008-10-02 19:17:33 +0400 | [diff] [blame] | 97 | |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 98 | /* Enable all 5 PCI_CLK_OUTPUTS */ |
| 99 | clk->occr |= 0xf8000000; |
| 100 | udelay(2000); |
| 101 | |
| 102 | /* Configure PCI Local Access Windows */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 103 | pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR; |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 104 | pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB; |
| 105 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 106 | pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR; |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 107 | pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB; |
| 108 | |
| 109 | udelay(2000); |
| 110 | |
| 111 | mpc83xx_pci_init(1, reg, 0); |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 112 | skip_pci: |
| 113 | /* There is no PEX in MPC8379 parts. */ |
| 114 | if (PARTID_NO_E(spridr) == SPR_8379) |
| 115 | return; |
| 116 | |
Anton Vorontsov | 58fc0c3 | 2009-02-19 18:20:39 +0300 | [diff] [blame] | 117 | if (pex2) |
| 118 | fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_PEX_X2, |
| 119 | FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V); |
| 120 | else |
| 121 | fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_PEX, |
| 122 | FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V); |
| 123 | |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 124 | /* Configure the clock for PCIE controller */ |
| 125 | clrsetbits_be32(&clk->sccr, SCCR_PCIEXP1CM | SCCR_PCIEXP2CM, |
| 126 | SCCR_PCIEXP1CM_1 | SCCR_PCIEXP2CM_1); |
| 127 | |
| 128 | /* Deassert the resets in the control register */ |
| 129 | out_be32(&sysconf->pecr1, 0xE0008000); |
| 130 | if (!pex2) |
| 131 | out_be32(&sysconf->pecr2, 0xE0008000); |
| 132 | udelay(2000); |
| 133 | |
| 134 | /* Configure PCI Express Local Access Windows */ |
| 135 | out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR); |
| 136 | out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB); |
| 137 | |
| 138 | out_be32(&pcie_law[1].bar, CONFIG_SYS_PCIE2_BASE & LAWBAR_BAR); |
| 139 | out_be32(&pcie_law[1].ar, LBLAWAR_EN | LBLAWAR_512MB); |
| 140 | |
Anton Vorontsov | 62842ec | 2009-01-08 04:26:19 +0300 | [diff] [blame] | 141 | mpc83xx_pcie_init(pex2 ? 1 : 2, pcie_reg, 0); |
| 142 | } |
| 143 | |
| 144 | void ft_pcie_fixup(void *blob, bd_t *bd) |
| 145 | { |
| 146 | const char *status = "disabled (PCIE1 is x2)"; |
| 147 | |
| 148 | if (!is_pex_x2()) |
| 149 | return; |
| 150 | |
| 151 | do_fixup_by_path(blob, "pci2", "status", status, |
| 152 | strlen(status) + 1, 1); |
Dave Liu | b19ecd3 | 2007-09-18 12:37:57 +0800 | [diff] [blame] | 153 | } |